[Wiki] changed: Project/ActiveSync

mrubinsk  Fri, 02 Apr 2010 16:02:41 -0400

Modified page: http://wiki.horde.org/Project/ActiveSync
New Revision:  1.27
Change log:  note about ineffecient ping command

@@ -64,8 +64,11 @@

  * Todo syncing: Neither the iPod/iPhone or Android have a native  
Todo application. !TouchDown does provide one, but backend support  
still needs to be added.

  * Implement more recent protocol version support - version 12 or  
maybe 12.1 (Exchange 2007??) should be fairly non-disruptive. Version  
12 would get us more atomic policy settings, local wipe rules, as well  
as the ability to send the policy settings to the client as the more  
compact wbxml. 14 (Exchange 2010?) would probably be lots more work as  
it does away with PING, using SYNC for waiting for changes instead.
+
+* Rework the PING command's use of state so that it only has to stat  
the messages that fall within the time period prescribed by the  
FILTERTYPE tag passed when SYNCing calendar folders.  Currently, the  
file driver is very wasteful in this regard, it has to stat **every**  
appointment message on the server since it knows nothing about the  
FILTERTYPE last used. Need to add the last used filtertype to the  
device's state file and use that in PING to set an appropriate filter  
type value for the state machine to use when diffing. This should  
improve performance greatly on calendars with a substantial amount of  
old events. Of course, this won't be an issue with a horde history  
driver.
+

  ++ Resources

  http://z-push.sourceforge.net


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